
USB-5801 User Manual vi
Figure 3.9 Delayed Start and Stop Triggers .............................. 26
3.6.2 Digital Triggers............................................................................ 26
Figure 3.10Digital Trigger Signal Connection and Signals ......... 26
3.6.3 Analog Triggers .......................................................................... 27
Figure 3.11Analog Triggers ........................................................ 27
Figure 3.12Analog Triggers with Hysteresis............................... 27
3.7 Analog Calibration................................................................................... 28
3.7.1 Analog Calibration Overview ...................................................... 28
Figure 3.13Block Diagram of Analog Calibration Circuitry ......... 28
3.7.2 Voltage References Calibration .................................................. 29
Figure 3.14Voltage Reference Calibration ................................. 29
3.7.3 Analog Input Calibration ............................................................. 30
Figure 3.15Analog Input Calibration ........................................... 30
3.7.4 Analog Output Calibration........................................................... 30
Figure 3.16Analog Output Calibration ........................................ 30
3.7.5 Store Calibration Parameters to EEPROM................................. 31
Figure 3.17Store Calibration Parameters to EEPROM .............. 31
3.7.6 Load Default Calibration Parameters from EEPROM................. 32
Figure 3.18Load Default Calibration Parameters from EEPROM ..
32
3.8 Digital Input/Output ................................................................................. 33
3.8.1 Digital Inputs ............................................................................... 33
Figure 3.19Digital Input Functional Block Diagram .................... 33
Figure 3.20Digital Input Interrupt ................................................ 33
Figure 3.21Digital Input Filter ..................................................... 34
3.8.2 Digital Outputs ............................................................................ 35
Figure 3.22Digital Output Functional Block Diagram.................. 35
3.9 Counter/Timer ......................................................................................... 35
Figure 3.23Counter/Timer Functional Block Diagram ................ 35
3.9.1 Event Counting ........................................................................... 36
Figure 3.24Event Counting......................................................... 36
3.9.2 Frequency Measurement (Tachometer) ..................................... 36
Figure 3.25Frequency Measurement ......................................... 36
3.9.3 Phase Measurement for Analog Input Samples ......................... 37
Figure 3.26Phase Measurement for Analog Input Samples....... 37
3.10 Synchronization ...................................................................................... 38
Figure 3.27Multiple Module Synchronization.............................. 38
Appendix A Specifications.................................... 39
A.1 Analog Input............................................................................................ 40
A.1.1 Functions .................................................................................... 40
A.1.2 ADC Modulator Oversample Rate .............................................. 40
A.1.3 Maximum Operating Voltage ...................................................... 40
A.1.4 Input Overvoltage Protection ...................................................... 41
A.1.5 AC Coupled Measurement Accuracy.......................................... 41
A.1.6 DC Coupled Measurement Accuracy ......................................... 41
A.1.7 Input Impedance ......................................................................... 41
A.1.8 Common-Mode Rejection Ratio (CMRR) ................................... 41
A.1.9 Frequency Response.................................................................. 42
A.1.10 AC Coupling................................................................................ 42
A.1.11 Idle Channel Noise ..................................................................... 42
A.1.12 Dynamic Range (DR).................................................................. 42
A.1.13 Spurious Free Dynamic Range (SFDR) ..................................... 42
A.1.14 Signal-to-Noise Ratio (SNR)....................................................... 43
A.1.15 Total Harmonic Distortion (THD) ................................................ 43
A.1.16 Total Harmonic Distortion Plus Noise (THD+N) ......................... 43
A.1.17 Crosstalk..................................................................................... 43
A.1.18 Integrated Electronic Piezoelectric Excitation (IEPE) ................. 44